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MASON, OH - AUGUST 18: Steve Johnson of the United States reacts after defeating Jo-Wilfried Tsonga of France during round three play on Day 6 of the Western & Southern Open at the Lindner Family Tennis Center on August 18, 2016 in Mason, Ohio. Johnson won 6-3, 7-6. (Photo by Joe Robbins/Getty Images)

MASON, OH - AUGUST 18: Steve Johnson of the United States reacts after defeating Jo-Wilfried Tsonga of France during round three play on Day 6 of the Western & Southern Open at the Lindner Family Tennis Center on August 18, 2016 in Mason, Ohio. Johnson won 6-3, 7-6. (Photo by Joe Robbins/Getty Images)